Sunday, October 19, 2025
Sequential Fourm at Sequential in San Francisco
video upload by Taichy Westwood Nishimory
"touching polyphonic aftertouch (P-AT) of a new synthesizer, Sequential Fourm at Sequential in San Francisco in October 2025"
YAMAHA MODX M Tutorial (M6, M7, M8)
video upload by Woody Piano Shack
"YAMAHA MODX M tutorial applyying to the MODX M6, MODX M7 and MODX M8 and to some extent the YAMAHA MONTAGE M."
"Lesson packs also available for one-time purchase on Patreon.
MORE WOODY PIANO SHACK
https://woodypianoshack.com"
Soma Laboratory Documentary | Voltage Labs
video upload by Voltage Labs
"SOMA Laboratory creates instruments that don’t just make sounds - they start a dialogue. From the Lyra-8 to the Pulsar-23, Vlad Kreimer’s philosophy of 'romantic engineering' challenges convention, inviting chaos, unpredictability, and a deeper human connection with machines."
Montage M8X after one year: Can I sell all my other synths now?
video upload by Floyd Steinberg
"I've owned a Montage M8X for a year. Here's a video of 'this is cool and this still needs some work' impressions, as they came to my mind.
HÄLP ZIS CHANNEL
https://www.patreon.com/floyd_steinberg
https://floydsteinberg.gumroad.com/
https://floydsteinberg.bandcamp.com/"
The video I used for making my main point is this one;"
Hazel's Epic Brass Pad - UDO Super 6
video upload by UDO Audio
Find more from Hazel here: https://www.hazelmills.com/
Electro-Harmonix Memory Man - Solid State Echo/ Chorus - Serviced w/Restoration & Original Box
Note: links to listings are affiliate links for which the site may be compensated.
via this eBay listing
Additional Analog U.S. Listings
"This set is in excellent condition and working 100%. It has just been professionally serviced and with some restoration. As you can see, it does include the original box. This is the Memory Man V3, EH-7310, and uses the Panasonic MN3005 BBD. It will be properly packaged when sold and will arrive in the condition as stated. Not sold as-is! Proof of the actual shipping cost will be provided if needed. Although this listing is marked as a US sale only, I will ship to most countries."
via this eBay listing
Additional Analog U.S. Listings
"This set is in excellent condition and working 100%. It has just been professionally serviced and with some restoration. As you can see, it does include the original box. This is the Memory Man V3, EH-7310, and uses the Panasonic MN3005 BBD. It will be properly packaged when sold and will arrive in the condition as stated. Not sold as-is! Proof of the actual shipping cost will be provided if needed. Although this listing is marked as a US sale only, I will ship to most countries."
Salamander Music Sytems Voice 400 s/n 14 not perfect
Note: links to listings are affiliate links for which the site may be compensated.
via this Vemia listing
Click the auction link on top when you get there for additional listings.
This appears to be the first one featured on the site. Pics of the inside below.
via the listing:
"SMS (Salamander Music Systems - sorry for the typo in the title) Voice 400 - Programmable analogue mono synth with 2 VCOs and analogue delay line. Seems to work all OK EXCEPT the modulation generator (LFO) is not working. Condition is average. Has USA plug on, but can be switched between 110v/240v on rear. Also see the next lot."
via this Vemia listing
Click the auction link on top when you get there for additional listings.
This appears to be the first one featured on the site. Pics of the inside below.
via the listing:
"SMS (Salamander Music Systems - sorry for the typo in the title) Voice 400 - Programmable analogue mono synth with 2 VCOs and analogue delay line. Seems to work all OK EXCEPT the modulation generator (LFO) is not working. Condition is average. Has USA plug on, but can be switched between 110v/240v on rear. Also see the next lot."
Yamaha CS30 SN 4145
Note: links to listings are affiliate links for which the site may be compensated.
via this Vemia listing
Click the auction link on top when you get there for additional listings.
Pic of the inside.
"Released in 1977, the Yamaha CS30 is the flagship of their CS Monophonic range. It is as close to a modular synthesiser that Yamaha ever made and its modulation and routing options are extensive.
This one plays and sounds great. The synthesiser responds to all the pots and sliders as it should and it's ready to use and create weird and wonderful noises and textures. However, to get it to 100 percent functionality the synth requires a service to fix a few issues. Neither the combined 1+2 audio jack nor headphone output work, though the individual 1 and 2 jacks are fine. The sequencer works when switched to Manual and steps through by pushing the red button. However, the 'Clock' function only works when the synth has been powered on for a while and has 'warmed-up'.
Cosmetically the synth is in pretty good shape with nothing broken or missing. There are lots of very small dots of blistered paint, some with a hint of surface rust. The most noticeable ones are at the top of the control panel but these have not increased in size or number over the past decade-or-so. They don't look too bad, in my opinion. Inside is clean and dry with no signs of damp. One of the C keys has a cigarette burn (WHY??!!!) which has melted the plastic slightly. However, all keys are secure and function correctly. The case has a few marks here and there, but overall it looks good.
The case was designed to make servicing very easy. The front control panel is hinged at the back and can be opened by removing just two screws from each side panel. This then reveals a very neat collection of boards and wiring.
The CS30 can be easily integrated into a modern MIDI studio setup. By using an appropriate converter you can interface various features of the synthesiser via its numerous control inputs and outputs:
Foot Controller (CV) for volume in.
Sequencer CV and Trigger (gate) out.
Key Voltage (pitch CV) in and out.
Trigger (gate) in and out.
External (audio to the filter) in.
It features two voltage controlled oscillators (VCOs), two voltage controlled filters (VCFs - both featuring low-pass, band-pass and high-pass options), two voltage controlled amplifiers (VCAs) and three envelope generators. It also sports a ring modulator and a voltage controlled low-frequency oscillator (LFO).
It is fairly unusual for a hard-wired synthesizer in that it features a variety of switches which allow the user to re-route the signal flow from the usual VCO-VCF-VCA convention. For example, VCO 1 can output a square wave through VCF 1 whilst also outputting a high-pass filtered sawtooth wave through VCO 2. Another example is that the envelope generators can be assigned to any of the VCO, VCF and VCA modules and can also be inverted. Because the LFO is voltage controlled, the oscillating speed can be governed by an envelope generator and different waveforms can be applied to the other modules all at the same time. The CS30 also features an external signal input for filtering other musical instruments and audio sources, which can also be used as a modulation source. It includes an onboard eight-step analogue sequencer."
via this Vemia listing
Click the auction link on top when you get there for additional listings.
Pic of the inside.
"Released in 1977, the Yamaha CS30 is the flagship of their CS Monophonic range. It is as close to a modular synthesiser that Yamaha ever made and its modulation and routing options are extensive.This one plays and sounds great. The synthesiser responds to all the pots and sliders as it should and it's ready to use and create weird and wonderful noises and textures. However, to get it to 100 percent functionality the synth requires a service to fix a few issues. Neither the combined 1+2 audio jack nor headphone output work, though the individual 1 and 2 jacks are fine. The sequencer works when switched to Manual and steps through by pushing the red button. However, the 'Clock' function only works when the synth has been powered on for a while and has 'warmed-up'.
Cosmetically the synth is in pretty good shape with nothing broken or missing. There are lots of very small dots of blistered paint, some with a hint of surface rust. The most noticeable ones are at the top of the control panel but these have not increased in size or number over the past decade-or-so. They don't look too bad, in my opinion. Inside is clean and dry with no signs of damp. One of the C keys has a cigarette burn (WHY??!!!) which has melted the plastic slightly. However, all keys are secure and function correctly. The case has a few marks here and there, but overall it looks good.
The case was designed to make servicing very easy. The front control panel is hinged at the back and can be opened by removing just two screws from each side panel. This then reveals a very neat collection of boards and wiring.
The CS30 can be easily integrated into a modern MIDI studio setup. By using an appropriate converter you can interface various features of the synthesiser via its numerous control inputs and outputs:
Foot Controller (CV) for volume in.
Sequencer CV and Trigger (gate) out.
Key Voltage (pitch CV) in and out.
Trigger (gate) in and out.
External (audio to the filter) in.
It features two voltage controlled oscillators (VCOs), two voltage controlled filters (VCFs - both featuring low-pass, band-pass and high-pass options), two voltage controlled amplifiers (VCAs) and three envelope generators. It also sports a ring modulator and a voltage controlled low-frequency oscillator (LFO).
It is fairly unusual for a hard-wired synthesizer in that it features a variety of switches which allow the user to re-route the signal flow from the usual VCO-VCF-VCA convention. For example, VCO 1 can output a square wave through VCF 1 whilst also outputting a high-pass filtered sawtooth wave through VCO 2. Another example is that the envelope generators can be assigned to any of the VCO, VCF and VCA modules and can also be inverted. Because the LFO is voltage controlled, the oscillating speed can be governed by an envelope generator and different waveforms can be applied to the other modules all at the same time. The CS30 also features an external signal input for filtering other musical instruments and audio sources, which can also be used as a modulation source. It includes an onboard eight-step analogue sequencer."
Original Black Oberheim TVS Two-Voice System
Note: links to listings are affiliate links for which the site may be compensated.
via this Vemia listing
Click the auction link on top when you get there for additional listings.
"One of very many items from Calum Hunter's superb home studio - and probably the jewel in the crown. This is a rare black version of Tom Oberheim's classic original Two-Voice synth. Cosmetically it looks a bit tatty at first glance - but on closer inspection, the bad areas where the paint has come off in places are all just on the chassis surrounding the SEMs and sequencer. Oberheim's preparation of these areas was obviously not up to their usual standard. Those pieces are usually white, and they simply over-sprayed them without preparing the surface well enough. In contrast, look at the black section immediately above the keyboard, which is really good.
All the modules (the important bit) are actually in extremely good condition - and apart from the sequencer having four little knob caps missing, near mint.
It would be simple to respray the bad chassis bits if you wanted. The tolex, keys and case hardware are pretty good for their age. There is no lid. The mains socket has been replaced with a safer IEC one. Voltage (TBC) is UK /European.
It has been tested by Audiocircus and is sounding great."
via this Vemia listing
Click the auction link on top when you get there for additional listings.
"One of very many items from Calum Hunter's superb home studio - and probably the jewel in the crown. This is a rare black version of Tom Oberheim's classic original Two-Voice synth. Cosmetically it looks a bit tatty at first glance - but on closer inspection, the bad areas where the paint has come off in places are all just on the chassis surrounding the SEMs and sequencer. Oberheim's preparation of these areas was obviously not up to their usual standard. Those pieces are usually white, and they simply over-sprayed them without preparing the surface well enough. In contrast, look at the black section immediately above the keyboard, which is really good.All the modules (the important bit) are actually in extremely good condition - and apart from the sequencer having four little knob caps missing, near mint.
It would be simple to respray the bad chassis bits if you wanted. The tolex, keys and case hardware are pretty good for their age. There is no lid. The mains socket has been replaced with a safer IEC one. Voltage (TBC) is UK /European.
It has been tested by Audiocircus and is sounding great."
PWM Malevolent Semi-Modular Analog Keyboard Synthesizer
Note: links to listings are affiliate links for which the site may be compensated.
via this listing
Additional Perfect Circuit listings
via this listing
Additional Perfect Circuit listings
Moog Source Analog Keyboard Synthesizer SN 2041
Note: links to listings are affiliate links for which the site may be compensated.
via this listing
Additional Perfect Circuit listings
via this listing
Additional Perfect Circuit listings
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MATRIXSYNTH - EVERYTHING SYNTH
© Matrixsynth - All posts are presented here for informative, historical and educative purposes as applicable within fair use.
MATRIXSYNTH is supported by affiliate links that use cookies to track clickthroughs and sales. See the privacy policy for details.
MATRIXSYNTH - EVERYTHING SYNTH
